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Inventories
 3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Inventories

5.

Inventories

 

(Table only in thousands)

 

March 31,

2017

 

 

December 31,

2016

 

Raw materials

 

$

17,866

 

 

$

17,889

 

Work in process

 

 

4,142

 

 

 

3,986

 

Finished goods

 

 

1,554

 

 

 

1,508

 

Obsolescence allowance

 

 

(2,064

)

 

 

(1,896

)

 

 

$

21,498

 

 

$

21,487

 

 

Amounts credited to the allowance for obsolete inventory and charged to cost of sales amounted to $0.2 million and $0.2 million for the three-month periods ended March 31, 2017 and 2016, respectively.